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US 10,851,049 B2Granted
Curable benzoxazine compositions
AssigneeHuntsman Advanced Materials Americas LLC
InventorsDong Le, Derek Kincaid, Dong Wang, Bradley Rechichar
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Abstract
The present disclosure provides a curable composition containing a benzoxazine, reactive diluent and a soluble polyimide. The curable composition, upon curing, renders an article having well balanced thermal, chemical and mechanical properties and may be used in a variety of applications, such as in coatings, structural composites and encapsulating systems for electronic and electrical components.
Claims11
A curable composition comprising:
- (a) about 40% by weight to about 90% by weight of a benzoxazine;
- (b) about 5% by weight to about 30% by weight of a reactive diluent;
- and
- (c) a soluble polyimide comprising recurring units of the formula (4)
- where the four carbonyl groups are bonded to different carbon atoms and are in the ortho or para position to each other so that five or six membered imide rings are formed,
- Z1 is a phenylindane radical of the formula (5):
- wherein R4 is hydrogen or a C1-C5 alkyl group, and
- Z2 is a phenylindane radical of the formula (6):
- wherein R5 is hydrogen or a C1-C5 alkyl group and R6, R7, R8 and R9 are each independently hydrogen, halogen or a C1-C4 alkyl group and where the percent by weights are based on the total weight of the curable composition.
6 more elements
Dependencies are inferred from the claim text.